188 lines
5.3 KiB
C
188 lines
5.3 KiB
C
/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/param.h>
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#ifndef _KERNEL
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <signal.h>
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#include <err.h>
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#else
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/bio.h>
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#include <sys/malloc.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#endif
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#include <sys/stdint.h>
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#include <sys/errno.h>
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#include <geom/geom.h>
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#include <geom/geom_slice.h>
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#include <machine/endian.h>
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#define PC98_CLASS_NAME "PC98"
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struct g_pc98_softc {
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int foo;
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};
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static int
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g_pc98_start(struct bio *bp)
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{
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struct g_geom *gp;
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struct g_pc98_softc *ms;
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struct g_slicer *gsp;
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gp = bp->bio_to->geom;
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gsp = gp->softc;
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ms = gsp->softc;
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return (0);
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}
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static void
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g_pc98_dumpconf(struct sbuf *sb, char *indent, struct g_geom *gp, struct g_consumer *cp __unused, struct g_provider *pp)
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{
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g_slice_dumpconf(sb, indent, gp, cp, pp);
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}
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static struct g_geom *
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g_pc98_taste(struct g_class *mp, struct g_provider *pp, int flags)
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{
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struct g_geom *gp;
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struct g_consumer *cp;
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struct g_provider *pp2;
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int error, i, npart;
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u_char *buf;
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struct g_pc98_softc *ms;
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u_int sectorsize, u, v;
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u_int fwsect, fwhead;
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off_t mediasize, start, length;
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struct g_slicer *gsp;
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g_trace(G_T_TOPOLOGY, "g_pc98_taste(%s,%s)", mp->name, pp->name);
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g_topology_assert();
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if (flags == G_TF_NORMAL &&
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!strcmp(pp->geom->class->name, PC98_CLASS_NAME))
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return (NULL);
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gp = g_slice_new(mp, 8, pp, &cp, &ms, sizeof *ms, g_pc98_start);
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if (gp == NULL)
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return (NULL);
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gsp = gp->softc;
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g_topology_unlock();
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gp->dumpconf = g_pc98_dumpconf;
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npart = 0;
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while (1) { /* a trick to allow us to use break */
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if (gp->rank != 2 && flags == G_TF_NORMAL)
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break;
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error = g_getattr("GEOM::sectorsize", cp, §orsize);
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if (error) {
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sectorsize = 512;
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printf("g_pc98_taste: error %d Sectors are %d bytes\n",
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error, sectorsize);
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}
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error = g_getattr("GEOM::mediasize", cp, &mediasize);
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if (error) {
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mediasize = 0;
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printf("g_error %d Mediasize is %lld bytes\n",
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error, (long long)mediasize);
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}
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error = g_getattr("GEOM::fwsectors", cp, &fwsect);
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if (error || fwsect == 0) {
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fwsect = 17;
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printf("g_pc98_taste: error %d guessing %d sectors\n",
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error, fwsect);
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}
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error = g_getattr("GEOM::fwheads", cp, &fwhead);
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if (error || fwhead == 0) {
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fwhead = 8;
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printf("g_pc98_taste: error %d guessing %d heads\n",
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error, fwhead);
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}
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gsp->frontstuff = fwsect * sectorsize;
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buf = g_read_data(cp, 0,
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sectorsize < 1024 ? 1024 : sectorsize, &error);
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if (buf == NULL || error != 0)
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break;
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if (buf[0x1fe] != 0x55 || buf[0x1ff] != 0xaa)
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break;
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if (buf[4] != 'I' || buf[5] != 'P' ||
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buf[6] != 'L' || buf[7] != '1')
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break;
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for (i = 0; i < 16; i++) {
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v = g_dec_le2(buf + 512 + 10 + i * 32);
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u = g_dec_le2(buf + 512 + 14 + i * 32);
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if (u == 0)
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continue;
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printf("Index: %d\n", i);
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g_hexdump(buf+512 + i * 32, 32);
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start = v * fwsect * fwhead * sectorsize;
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length = (u - v) * fwsect * fwhead * sectorsize;
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printf("c%d - c%d (%jx - %jx) = %s\n",
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v, u, (uintmax_t)start, (uintmax_t)length, buf + 512 + 16 + i * 32);
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npart++;
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pp2 = g_slice_addslice(gp, i,
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start, length,
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"%ss%d", pp->name, 1 + i);
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g_error_provider(pp2, 0);
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}
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break;
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}
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g_topology_lock();
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error = g_access_rel(cp, -1, 0, 0);
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if (npart > 0)
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return (gp);
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g_std_spoiled(cp);
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return (NULL);
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}
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static struct g_class g_pc98_class = {
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PC98_CLASS_NAME,
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g_pc98_taste,
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NULL,
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G_CLASS_INITIALIZER
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};
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DECLARE_GEOM_CLASS(g_pc98_class, g_pc98);
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